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WO2007119730A1 - Procede de production d'une resine hydroabsorbante modifiee - Google Patents

Procede de production d'une resine hydroabsorbante modifiee Download PDF

Info

Publication number
WO2007119730A1
WO2007119730A1 PCT/JP2007/057936 JP2007057936W WO2007119730A1 WO 2007119730 A1 WO2007119730 A1 WO 2007119730A1 JP 2007057936 W JP2007057936 W JP 2007057936W WO 2007119730 A1 WO2007119730 A1 WO 2007119730A1
Authority
WO
WIPO (PCT)
Prior art keywords
absorbent resin
water absorbent
water
weight
production
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2007/057936
Other languages
English (en)
Inventor
Yoshiro Mitsukami
Makoto Matsumoto
Taku Iwamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Shokubai Co Ltd
Original Assignee
Nippon Shokubai Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Shokubai Co Ltd filed Critical Nippon Shokubai Co Ltd
Priority to JP2008526310A priority Critical patent/JP2009533485A/ja
Publication of WO2007119730A1 publication Critical patent/WO2007119730A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/28—Treatment by wave energy or particle radiation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
    • C08J2333/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
    • C08J2333/06—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C08J2333/08—Homopolymers or copolymers of acrylic acid esters

Definitions

  • the surface treatment of a water absorbent resin can be carried out fully satisfactorily even at a reaction temperature in the neighborhood of room temperature, and the surface-treated water absorbent resin consequently obtained can manifest at extremely high levels such characteristics as absorption capacity, absorption speed, gel strength, and suction power which the water absorbent resin is expected to possess. Accordingly, the water absorbent resin which is obtained by this invention is optimally usable for sanitary cotton, disposable diapers, and other sanitary materials for absorbing body fluid and for agricultural activities.
  • a sample is put into a flask for titration, titration is conducted with a Karl Fischer reagent by pushing a "START" key.
  • a weight of the sample (a) [mg] and an amount of Karl Fischer titration (b) [mL] are recorded. Measuring was conducted by three times in all, and an average value is calculated.
  • the aluminum cup containing the water absorbent resin is weighed [W5 (g) ] .
  • the total water content is calculated from the values W4 and W5 by the following formula.
  • Example 13 The sameprocedure as described in Example 10 was repeated except that the water amount in the treating solution was changed to 160 g, to obtain a water absorbent resin composition (12) havinga surface water content of 6.7 % byweight . Further, by the same procedure as described in Example 1, the water absorbent resin composition (12) was irradiated with ultraviolet rays for 15 minutes, to obtain a modified water absorbent resin (12) . The modified water absorbent resin (12) obtained was rated for various properties, and the results are shown in Table 2 below. (Example 13)
  • the modified water absorbent resin for comparison (3) obtained was rated for various properties, and the results are shown in Table 2 below.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Graft Or Block Polymers (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

La présente invention concerne un procédé de production d'une résine hydroabsorbante modifiée ayant une excellente efficacité de production et présentant d'excellentes absorptivité en fonction de la pression, vitesse d'absorption, force de gel, perméabilité de liquide et analogues. La présente invention concerne un procédé de production d'une résine hydroabsorbante modifiée, qui comprend a) une étape de mélange comprenant le mélange d'une résine hydroabsorbante, d'eau et d'un initiateur hydrosoluble de polymérisation radicalaire sans addition d'un monomère éthyléniquement insaturé, de façon à obtenir une composition de résine hydroabsorbante, et b) une étape d'irradiation comprenant l'irradiation de ladite composition de résine hydroabsorbante obtenue dans l'étape de mélange avec des rayons d'énergie active, où une teneur en eau en surface de ladite composition de résine hydroabsorbante, au moins à un moment quelconque dans l'étape d'irradiation, est régulée à un taux non inférieur à 3,0 % en poids sur la base de 100 % en poids de la résine hydroabsorbante.
PCT/JP2007/057936 2006-04-10 2007-04-04 Procede de production d'une resine hydroabsorbante modifiee Ceased WO2007119730A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008526310A JP2009533485A (ja) 2006-04-10 2007-04-04 改質された吸水性樹脂の製造方法

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2006108081 2006-04-10
JP2006-108081 2006-04-10
JP2006-157577 2006-06-06
JP2006157577 2006-06-06

Publications (1)

Publication Number Publication Date
WO2007119730A1 true WO2007119730A1 (fr) 2007-10-25

Family

ID=38609490

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/057936 Ceased WO2007119730A1 (fr) 2006-04-10 2007-04-04 Procede de production d'une resine hydroabsorbante modifiee

Country Status (3)

Country Link
JP (1) JP2009533485A (fr)
TW (1) TW200738758A (fr)
WO (1) WO2007119730A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114031819A (zh) * 2021-11-25 2022-02-11 东莞市兆科电子材料科技有限公司 水凝胶及其制备方法和应用

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2004732A2 (fr) * 2006-04-10 2008-12-24 The Procter and Gamble Company Élément absorbant comprenant une résine modifiée absorbant l'eau

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6399211A (ja) * 1986-06-04 1988-04-30 Hayashikane Zosen Kk 改質吸水性樹脂の製造方法
JPS63260907A (ja) * 1987-04-17 1988-10-27 Mitsubishi Petrochem Co Ltd 高吸水性ポリマ−の製造法
JP2005097585A (ja) * 2003-08-27 2005-04-14 Nippon Shokubai Co Ltd 表面処理された粒子状吸水性樹脂の製造方法
JP2007056071A (ja) * 2005-08-22 2007-03-08 Procter & Gamble Co 改質された吸水性樹脂の製法
JP2007077366A (ja) * 2005-09-16 2007-03-29 Procter & Gamble Co 吸水剤の製法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6399211A (ja) * 1986-06-04 1988-04-30 Hayashikane Zosen Kk 改質吸水性樹脂の製造方法
JPS63260907A (ja) * 1987-04-17 1988-10-27 Mitsubishi Petrochem Co Ltd 高吸水性ポリマ−の製造法
JP2005097585A (ja) * 2003-08-27 2005-04-14 Nippon Shokubai Co Ltd 表面処理された粒子状吸水性樹脂の製造方法
JP2007056071A (ja) * 2005-08-22 2007-03-08 Procter & Gamble Co 改質された吸水性樹脂の製法
JP2007077366A (ja) * 2005-09-16 2007-03-29 Procter & Gamble Co 吸水剤の製法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114031819A (zh) * 2021-11-25 2022-02-11 东莞市兆科电子材料科技有限公司 水凝胶及其制备方法和应用

Also Published As

Publication number Publication date
TW200738758A (en) 2007-10-16
JP2009533485A (ja) 2009-09-17

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